Yes Singorama is a great course!
I've used Singorama myself and it definitely helped me to become a better singer. What I like about it is that the lessons are much more comprehensive than other singing courses. It doesn't just teach you great singing technique, but also has cool lessons about performance and songwriting tips. You can find a detailed Singorama review here:
http://www.starsinginglessons.com/singor…
But even better than reading Singorama reviews is to try it out yourself. You can get a free download of a Singorama 5 day minicourse and review it for yourself!
Day 1: "Introduction and Vocal Warmups"
http://www.starsinginglessons.com/minico…
Day 2: "Vocal Tone"
http://www.starsinginglessons.com/minico…
Day 3: "Becoming Pitch Perfect"
http://www.starsinginglessons.com/minico…
Day 4: "Breathing and Posture"
http://www.starsinginglessons.com/minico…
Day 5: "Creating a Connected Voice"
http://www.starsinginglessons.com/minico…
Hope this helps :)